Low noise when use 3.5mm-line-earphone - Xiaomi Redmi Note 7 Pro Questions & Answers

I searched someone said use 3.5mm to type-c DAC adapter to fix it.
Did anyone here use it?

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External microphone for 3.5mm audiojack.

Hey!
Anyone knows if it's possible to connect a external microphone in the 3.5mm jack. Would be nice to be able to plug in a better microphone when recording music shows etc. Shouldnt it be possible since you can speak through the htc-headset?
I don't think that you can plug a mic in it, this jack is "way-out" only, not "in"...
At least i never tried, but i guess it's how it works (if anyone can confirm this or prove me wrong ).
It's a 4 pin 3.5mm TRRS connector. It has a mic connector built in as well as the audio and ground.
I don't know if you can get a microphone with that specific connector, look it up and see... but it would be pretty easy to make your own connector if you cannibalise a headset or something like that and then connect whatever mic you wanted to that.
Not sure about the quality, but dealextreme sku.20714 seems like to fit your description.
I bought one of these some time ago to connect my Klipsch headphones.
http://cgi.ebay.co.uk/3-5mm-Headpho...GS-/280544944694?pt=UK_Mobiles_Accessories_RL
It is still recognised as a headset even when there are no headphones plugged into it.
So the quality for what you want is probably poor BUT it does prove that it can be done.
Perhaps one of these PLUS a good quality mic PLUS a soldering iron is the answer

How to connect Pixel 2 to Fiio DAC/AMP?

Looks like the bundled male USB-C to female USB-A adapter's intended purpose is to help users transfer their data from old phone to new Pixel.
However, I have a Fiio Q1 Mark II DAC/AMP that has micro USB as input so I used the bundled USB-C to USB-A adapter to connect my Pixel 2 to this DAC but audio still comes out from the phone's speakers.
How can I output the audio through USB-C? In developer options, I select USB Configuration to "Audio Source" but nothing changed. Or I need to use a USB-C to micro USB cable?
To clarify things, here is my configurations: Pixel 2 <-> bundled USB-C to A adapter <-> normal micro USB cable <-> Fiio DAC <-> Headphones (3.5mm jack)
Thanks.
You should be able to use the combined line-in/line-out port instead of the micro-USB, though this would require you to first use the bundled USB-C to 3.5mm adapter. This is problematic if you're not rooted since the Google DAC has terrible distortion, and can only be fixed with root. The setup would be:
Pixel 2 -> Google USB-C to 3.5mm DAC (digital gain <75%) -> 3.5 male to 3.5 male -> Fiio Q1 DAC using 3.5mm line-in -> Headphones
A USB-C to micro-USB cable may work.
Telperion said:
You should be able to use the combined line-in/line-out port instead of the micro-USB, though this would require you to first use the bundled USB-C to 3.5mm adapter. This is problematic if you're not rooted since the Google DAC has terrible distortion, and can only be fixed with root. The setup would be:
Pixel 2 -> Google USB-C to 3.5mm DAC (digital gain <75%) -> 3.5 male to 3.5 male -> Fiio Q1 DAC using 3.5mm line-in -> Headphones
A USB-C to micro-USB cable may work.
Click to expand...
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Thanks for your reply.
I have finally made it work. USB-C peripherals must be connected in order. You need to power on the DAC first, connect the micro USB input then connect the USB-C to the Pixel last so the Pixel would recognize the device on the other end.
Another question raised. I have also tried connecting Fiio DAC to iPhone via micro USB to Lightning cable. It worked instantly. iPhone wouldn't let me adjust volume on the phone. Everything was handled by Fiio. Which I think is the correct way to do it since iPhone is just sending digital signal to the DAC and let it do all the work.
But with the Pixel, I'm still able to adjust volume on the phone. I wonder why the phone could do it since it should not do anything with the digital audio signal. I also would like to know how loud should I set the volume at phone and adjust the rest at the AMP.
Also, Pixel's battery is draining fast! Because USB-C supports charging connected devices. I'm not able to disable USB-C power output. The LED light on Fiio indicates that it's charging. The reason that I didn't want to use Google's USB-C to 3.5mm DAC is because the distortion issue. I believe Fiio DAC is much more powerful and audio quality is better.
BlackMiracle said:
Another question raised. I have also tried connecting Fiio DAC to iPhone via micro USB to Lightning cable. It worked instantly. iPhone wouldn't let me adjust volume on the phone. Everything was handled by Fiio. Which I think is the correct way to do it since iPhone is just sending digital signal to the DAC and let it do all the work.
But with the Pixel, I'm still able to adjust volume on the phone. I wonder why the phone could do it since it should not do anything with the digital audio signal. I also would like to know how loud should I set the volume at phone and adjust the rest at the AMP.
The reason that I didn't want to use Google's USB-C to 3.5mm DAC is because the distortion issue. I believe Fiio DAC is much more powerful and audio quality is better.
Click to expand...
Click to collapse
Apple I believe uses a line level, the Pixel's is amplified so you can still control it on the phone.
I'd recommend hopping over the the Pixel 2 XL forum, there are technical details that might answer your question. Objective sound measurements.
Regarding the Google DAC, the distortion goes away below about 75% digital gain. In that chained setup, you'd be looking to send as pure a signal as possible with little to no digital gain to the Fiio, which would then cleanly amplify it for playback.

USB audio and charging possible?

Is there an adapter that lets let get audio from the USB port and also charge with the Pixel XL?
I use my headphone jack for something else (PluggyLock) so I want to get audio from the USB port. Tried a couple of adapters from eBay and Amazon, none of them work even though they claim to support the Pixel.
I see Google make a USB-C to headphone adapter, but it doesn't support charging. Kinda useless for long trips with navigation running.
Although I'm not aware of a working solution like you have described, you might try a workaround using a Bluetooth receiver with a headphone jack. Here is an example.
I am considering bluetooth, but it's fiddly and most of the cheap adapters have poor sound quality (buzzing, no AptX support).

Which usb-c to 3.5m jack cables work and why?

I tried the Apple usb-c to 3.5m headphone jack cable and it didn't work, I read online someone saying that it didn't work with the 6T either. Before I buy another cable I am trying to figure out which work and why. My car connection is with a audio cable so I need to use it for that.
Any help or expertise appreciated.
This one works perfectly for me
https://www.amazon.co.uk/dp/B07QN2WYXW?
USB C to 3.5mm Adapter Cables
thetonyclifton said:
I tried the Apple usb-c to 3.5m headphone jack cable and it didn't work, I read online someone saying that it didn't work with the 6T either. Before I buy another cable I am trying to figure out which work and why. My car connection is with a audio cable so I need to use it for that.
Any help or expertise appreciated.
Click to expand...
Click to collapse
I can't use direct links, so you'll have to play with the text below.
This one worked for me:
*amazon dot com* + /gp/product/B07PF8Z6LB/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&psc=1
I bought but returned this one due to having a buzzing sound and low volume:
*amazon dot com* + /gp/product/B07P5T7QTF/ref=ppx_yo_dt_b_asin_title_o04_s01?ie=UTF8&psc=1
The first link has "DAC" while the 2nd does not seem to have that feature.
I bought the 2nd because it said it worked for the Pixel 2 and because the usb c to 3.5mm adapter that came with the Pixel 2 worked in the OP7 Pro. Unfortunately, the product in the 2nd link didn't work in either device.
I hope that helps
If you don't care about the quality of the dac...you can just get the google branded one...it's cheaper than OP new pricing and it will probably work with any phones without a headphone jack.
Does anyone have a suggestion for a headphone jack + PD adapter that would work for the OP7P? Or am I stuck with buying just a USB C to 3.5mm adapter?

defect aux use USB adapter

Hey, my aux is gone, i only get a bit sound on one ear piece, can I use c-aux adapter? I also got got a hifi module from my LG g5 which have speaker and aux, but I need a c-c cable, anyone tried that one?
Cheers ?
It should work just fine routing audio via USB-C.

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